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Reinforcement slip model considering corrosion effects

Research Scholar

Yixin Zhang, PhD candidate, Xi'an University of Architecture and Technology (China)
Halil Sezen, faculty mentor

Background

  • Hometown: Luoyang, China
  • Degrees received: Master of Science in structural engineering, Xi'an University of Architecture and Technology, China.

What is the issue or problem addresses in your research?

The fixed end rotation caused by reinforcement anchorage slip in the footings can make a significant contribution to the total lateral displacement of reinforcement concrete (RC) members under seismic loading. Our research focuses on a simplified method to model this reinforcement slip of RC columns that suffered from the effect of corrosion.

What methodology did you use in your research?

Based on a current reinforcement slip model, a modified model with a revised bond stress distribution, which considers the degradation of bond strength caused by corrosion, is developed and solved by the mechanical evidence. Data from both the pull out tests and column tests are collected to validate the proposed model using software MATLAB and OpenSees.

What are the purpose/rationale and implications of your research?

This study presents the development and validation of a reinforcement slip model that can be applied to RC columns that are exposed to the corrosive environment. The proposed model can effectively reflect the bond slip behavior after corrosion and can improve the accuracy of prediction of the overall structural behavior.